But Joshua said to the people, “You are not able to serve the LORD, for he is a holy God. He is a jealous God; he will not forgive your transgressions or your sins.
19. And Joshua said unto the people, etc Here Joshua seems to act altogether absurdly in crushing the prompt and alert zeal of the people, by suggesting ground of alarm. For to what end does he insist that they cannot serve the Lord, unless it be to make them, from a sense of their utter powerlessness, to give themselves up to despair, and thus necessarily...
Joshua compels them to choose not because serving God is optional, but because a reasoned, deliberate choice will bind their consciences far more securely than mere obligation. The will of man clings most firmly to what it has elected freely; thus he sets before them a genuine fork in the road and demands they take it knowingly.
AI summary
Commenting on Joshua 24:15-28
And Joshua said unto the people,.... To their heads and representatives now assembled together, and who had returned to him the preceding answer: ye cannot serve the Lord; which he said not to discourage or deter them from serving the Lord, since it was his principal view, through the whole of this conversation with them, to engage them in it, but to observe to them...